black hair algae? brown hair algae? what is this? (pics inside)

[SENSEI]

Can someone please help me to identify this and tell me what i can possibly do to get rid of.
not sure if it's black hair or brown hair algae.

all my levels are good.
phosphates went up just a tad bit but thats it.

Please help! it is starting to spread rapidly!

 

[joy13]

Does it blow off easily? It looks a little like cyano.

 

[SENSEI]

Does it blow off easily? It looks a little like cyano.

no it's stuck on there pretty good. and looks hair like.

 

[alex07]

Try to brush it off with a tooth brush or try dosing peroxide

 

[SENSEI]

but wat is it?

 

[SENSEI]

caN ANYBODY HELP??

 

[pokmijn]

but wat is it?

I'm pretty sure that's cyno

 

[boardsurfer]

Looks like cyanobacteria. Increase flow to the area, possibly feed less (or use less flake food), use RO/DI water for topoffs and PWC's, more water changes. It's probably excess nutrients in your water.

 

[bskerrichard27]

Blasting scally wag u got cyno mate lol very common when u overfeed or bulbs are more then year old or u don't do enough pwc

 

[SENSEI]

the wierd thing is i use ro water and i have plenty of waterflow in take (2 hydors 1050's. and it's growing in high flow areas. lol
i was maybe overfeeding but stopped, now just doing 1-2 feedings a day.
did a 30% pwc and things seem to have calmed down. but i still have some.
my light schedule has been reduced to around 4 hours a day. was 9 hours a day.

am i on the right path?

 

[EriksFish315]

Cut back feelings a lot more lIke 3 times a WEEK.